package com.atguigu.common.valid;

import cn.hutool.core.util.ArrayUtil;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/**
 * 自定义校验器
 */
public class ListValueConstraintValidator implements ConstraintValidator<ListValue/*校验注解*/,Integer/*标注在那个类型*/> {

   private Set<Integer> set = new HashSet<>();
    /**
     * 初始化方法
     * @param constraintAnnotation
     */
    @Override
    public void initialize(ListValue constraintAnnotation) {
        int[] vals = constraintAnnotation.vals();
        if (ArrayUtil.isNotEmpty(vals)) {
            for (int val : vals) {
                set.add(val);
            }
        }

    }

    /**
     * 判断是否校验成功
     * @param integer 需要校验的值
     * @param constraintValidatorContext
     * @return
     */
    @Override
    public boolean isValid(Integer integer, ConstraintValidatorContext constraintValidatorContext) {
        return set.contains(integer);
    }
}
